Properties of Radium and Indium
Boiling Point
1,737.00 °C
  
99+
2,000.00 °C
  
99+
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Vickers Hardness
Not Available
  
Not Available
  
Optical Properties
  
  
Refractive Index
Not Available
  
Not Available
  
Reflectivity
Not Available
  
Not Available
  
Speed of Sound
Not Available
  
1,215.00 m/s
  
99+
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Ra
  
In
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol
  
99+
558.30 kJ/mol
  
99+
2nd Energy Level
979.00 kJ/mol
  
99+
1,820.70 kJ/mol
  
18
3rd Energy Level
Not Available
  
2,704.00 kJ/mol
  
39
Electrochemical Equivalent
4.22 g/amp-hr
  
6
1.43 g/amp-hr
  
99+
Electron Work Function
Not Available
  
Other Chemical Properties
Density
  
  
Density At Room Temperature
5.50 g/cm3
  
99+
7.31 g/cm3
  
99+
Density When Liquid (at m.p.)
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Not Available
  
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Not Available
  
Bulk Modulus
Not Available
  
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Not Available
  
Other Mechanical Properties
NA
  
Symbol
Ra
  
In
  
Period Number
7
  
5
  
Atomic Weight
114.82 amu
  
99+
Atomic Volume
45.20 cm3/mol
  
4
15.70 cm3/mol
  
33
Electron Configuration
[Rn] 7s2
  
[Kr] 4d10 5s2 5p1
  
Valence Electron Potential
20.10 (-eV)
  
99+
54.00 (-eV)
  
25
Atom
  
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
TETR-Crystal-Structure-of-Indium.jpg#100
  
Radius of an Atom
  
  
Atomic Radius
Not Available
  
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Adjacent Atomic Numbers
  
  
Electrical Properties
  
  
Resistivity
100.00 nΩ·m
  
31
Electrical Conductivity
Not Available
  
0.12 10
6/cm Ω
  
17
Electron Affinity
Not Available
  
28.90 kJ/mol
  
31
Electrical Property
NA
  
Magnetic Characteristics
  
  
Permeability
Not Available
  
Not Available
  
Susceptibility
Not Available
  
Not Available
  
Specific Heat
0.12 J/(kg K)
  
40
0.23 J/(kg K)
  
27
Thermal Conductivity
18.60 W/m·K
  
99+
81.80 W/m·K
  
21
Critical Temperature
Not Available
  
Not Available
  
Molar Heat Capacity
Not Available
  
26.74 J/mol·K
  
25
Thermal Expansion
Not Available
  
32.10 µm/(m·K)
  
9
Standard Molar Entropy
71.00 J/mol.K
  
14
57.80 J/mol.K
  
22
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
226.40 kJ/mol
  
40
Enthalpy of Fusion
Not Available
  
3.28 kJ/mol
  
99+
Enthalpy of Atomization
163.00 kJ/mol
  
99+
242.70 kJ/mol
  
99+